Secure Red-Black Air-Gapped Portable Computer

3. The secure portable computer device of claim 1, wherein said lower-security network is the Internet.

4. The secure portable computer device of claim 1, wherein said secure KVM further preventing data flow from said lower-security computer module to said higher-security computer module.

5. The secure portable computer device of claim 1, wherein said wireless communication device is selected from the group consisting of a cellular modem, Wireless LAN modem, WiFi modem and Bluetooth modem.

7. The secure portable computer device of claim 6, wherein said higher-security filter qualifies or disqualifies a USB connected to said higher-security USB jack based on a table of higher-security device qualification parameters.

9. The secure portable computer device of claim 1, wherein said secure KVM switch further comprises a video processor providing a composite video signal derived from signals from both said lower-security computer module and said higher-security computer module.

11. The secure portable computer device of claim 1, further comprising a user authentication device.

12. The secure portable computer device of claim 11, wherein said user authentication device is selected from a group consisting of a biometric sensor and smart card reader.

14. The secure portable computer device of claim 1, further comprising a power supply charger, wherein isolation in the power supply charger is provided for preventing data leakages through power signaling between said higher-security computer module and said lower-security computer module.

16. The secure portable computer device of claim 1, wherein said enclosure is tamper resistant.

17. The secure portable computer device of claim 1, wherein said enclosure is subdivided to compartments for separately enclosing at least each one of: said higher-security computer module, said lower-security computer module, and said secure KVM switch.

18. The secure portable computer device of claim 17, wherein said compartments for separately enclosing said higher-security computer module, and said secure KVM switch are made of metal.

20. The secure portable computer device of claim 1, wherein said tampering sensor is selected from a group consisting of: mechanical tampering switch; accelerometer; light sensor; micro-mesh covering the whole module PCB; and an X-Ray sensor.

23. The secure portable computer device of claim 22, wherein said crypto module support functions such as log, anti-tampering, and secret key storage.

24. The secure portable computer device of claim 1, wherein the secure portable computer device is configured to couple a filtered and authorized external USB device to the host emulator to augment or replace the internal keyboard and pointing device of the secure portable computer device.